Dockerfile

FROM openjdk:8u121-jdk-alpine

RUN apk update && apk add curl bash

ADD https://private/url/for/datomic-pro.zip /datomic-pro.zip
RUN mkdir /datomic && unzip /datomic-pro.zip -d /datomic

ADD go.sh /go.sh
RUN chmod 755 /go.sh

EXPOSE 4334

CMD /go.sh

go.sh

#!/bin/sh -xe

cd /datomic/datomic-*

cat <<EOF > aws.properties
host=`curl -q http://169.254.169.254/latest/meta-data/local-ipv4`
aws-cloudwatch-region=${REGION}
aws-dynamodb-region=${REGION}
aws-transactor-role=${TRANSACTOR_ROLE}
aws-peer-role=${PEER_ROLE}
protocol=${PROTOCOL}
memory-index-max=${MEMORY_INDEX_MAX}
heartbeat-interval-msec=${HEARTBEAT_INTERVAL_MSEC}
port=4334
memory-index-threshold=${MEMORY_INDEX_THRESHOLD}
aws-cloudwatch-dimension-value=${CLOUDWATCH_DIMENSION}
object-cache-max=${OBJECT_CACHE_MAX}
license-key=${LICENSE_KEY}
aws-dynamodb-table=${DDB_TABLE}
EOF

bin/transactor -Xms${XMX} -Xmx${XMX} aws.properties

task-def.json

{
    "taskDefinition": {
        "status": "ACTIVE", 
        "networkMode": "host", 
        "family": "YOUR_FAMILY", 
        "placementConstraints": [], 
        "requiresAttributes": [
            {
                "name": "com.amazonaws.ecs.capability.docker-remote-api.1.17"
            }, 
            {
                "name": "com.amazonaws.ecs.capability.docker-remote-api.1.18"
            }, 
            {
                "name": "com.amazonaws.ecs.capability.ecr-auth"
            }
        ], 
        "compatibilities": [
            "EC2"
        ], 
        "volumes": [], 
        "requiresCompatibilities": [], 
        "taskDefinitionArn": "ARN_IN_YOUR_ACCOUNT", 
        "containerDefinitions": [
            {
                "dnsSearchDomains": [], 
                "environment": [
                    {
                        "name": "LICENSE_KEY", 
                        "value": "YOUR_LICENSE_KEY_HERE"
                    }, 
                    {
                        "name": "DDB_TABLE", 
                        "value": "YOUR_DDB_TABLE_HERE"
                    }, 
                    {
                        "name": "XMX", 
                        "value": "2816M"
                    }, 
                    {
                        "name": "MEMORY_INDEX_MAX", 
                        "value": "350m"
                    }, 
                    {
                        "name": "PEER_ROLE", 
                        "value": "YOUR_PEER_ROLE"
                    }, 
                    {
                        "name": "TRANSACTOR_ROLE", 
                        "value": "YOUR_TRANSACTOR_ROLE"
                    }, 
                    {
                        "name": "PROTOCOL", 
                        "value": "ddb"
                    }, 
                    {
                        "name": "MEMORY_INDEX_THRESHOLD", 
                        "value": "32m"
                    }, 
                    {
                        "name": "HEARTBEAT_INTERVAL_MSEC", 
                        "value": "15000"
                    }, 
                    {
                        "name": "CLOUDWATCH_DIMENSION", 
                        "value": "transactor-prod"
                    }, 
                    {
                        "name": "OBJECT_CACHE_MAX", 
                        "value": "700m"
                    }, 
                    {
                        "name": "REGION", 
                        "value": "us-west-2"
                    }
                ], 
                "name": "datomic-transactor", 
                "links": [], 
                "mountPoints": [], 
                "image": "YOUR_IMAGE_TAG", 
                "dockerLabels": {}, 
                "essential": true, 
                "portMappings": [], 
                "dnsServers": [], 
                "dockerSecurityOptions": [], 
                "entryPoint": [], 
                "ulimits": [], 
                "memory": 3954, 
                "command": [], 
                "extraHosts": [], 
                "cpu": 0, 
                "volumesFrom": []
            }
        ], 
        "revision": 1
    }
}